OpenStack Orchestration (Heat)
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
 
 
heat/heat/engine/volume_tasks.py

79 lines
2.9 KiB

#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
from oslo_log import log as logging
from heat.common.i18n import _
from heat.common.i18n import _LI
from heat.engine import resource
LOG = logging.getLogger(__name__)
class VolumeAttachTask(object):
"""A task for attaching a volume to a Nova server."""
def __init__(self, stack, server_id, volume_id, device):
"""
Initialise with the stack (for obtaining the clients), ID of the
server and volume, and the device name on the server.
"""
self.clients = stack.clients
self.server_id = server_id
self.volume_id = volume_id
self.device = device
self.attachment_id = None
def __str__(self):
"""Return a human-readable string description of the task."""
return 'Attaching Volume %s to Instance %s as %s' % (self.volume_id,
self.server_id,
self.device)
def __repr__(self):
"""Return a brief string description of the task."""
return '%s(%s -> %s [%s])' % (type(self).__name__,
self.volume_id,
self.server_id,
self.device)
def __call__(self):
"""Return a co-routine which runs the task."""
LOG.debug(str(self))
va = self.clients.client('nova').volumes.create_server_volume(
server_id=self.server_id,
volume_id=self.volume_id,
device=self.device)
self.attachment_id = va.id
yield
cinder = self.clients.client('cinder')
vol = cinder.volumes.get(self.volume_id)
while vol.status == 'available' or vol.status == 'attaching':
LOG.debug('%(name)s - volume status: %(status)s'
% {'name': str(self), 'status': vol.status})
yield
vol = cinder.volumes.get(self.volume_id)
if vol.status != 'in-use':
LOG.info(_LI("Attachment failed - volume %(vol)s "
"is in %(status)s status"),
{"vol": vol.id,
"status": vol.status})
raise resource.ResourceUnknownStatus(
resource_status=vol.status,
result=_('Volume attachment failed'))
LOG.info(_LI('%s - complete'), str(self))